I tried to install the hp designjet 750c on my dell m6600 win 7 pro x64 via a SABRENT usb-parallel adaptor. (I previously used this adaptor to run an hp designjet 430).
From the printer manual interface, I can print various embedded test plots. After I installed the printer (using the pl532.zip driver package downloaded from hp.com) on my computer, I tried to print a test page and I get the error message "printer is out of paper". I have the printer set to ARCH D (24"x36"), regular bond as I have a standard 24" 20lb opaque bond roll loaded.
I have installed and uninstalled the printer driver several times. I also tried a different parallel cord. I also downloaded & extracted the file pl532.zip file again.